The role of state self‐esteem in positive mood effects on person impression: When does a positive mood lead to a favorable view of others?

Subjects in a positive or a neutral mood were engaged in an impression formation task (Experiment 1), and in a word fragment completion task (Experiment 2). A self‐referent versus other‐referent sentence completion task was used to induce a positive mood state. As a result, the subjects exhibited mood congruent effects on impression ratings in the self‐referent but not in the other‐referent mood induction condition. Word completion data, however, indicated that relevant traits (i.e., friendly traits) had been equally activated across the two mood induction conditions. It was also demonstrated that the self‐referent induction procedure was effective in enhancing the level of self‐esteem, whereas the other‐referent one was not. The results converged to suggest that the enhancement in state self‐esteem accompanying the self‐referent procedure might be relevant to positive mood effects on person impression. This indicates the limitation of the mood priming model.     

Effects of social networks on cross-cultural adjustment

A total of 221 responses were obtained from a survey of international students in Japan, regarding the facilitative effects of social network formation on their adjustment. Regression analyses were conducted to explore the relationships among four types of adjustment revealed in a preceding study (“general adjustment,”“self-control,”“affiliative” and “dependent”), network size, demographic variables, expected social support, etc. For each adjustment type, predictive variables were identified. Two of the variables that showed network effects on adjustment were Japanese language proficiency and race (Asians vs. Westerners). From these results, it would appear that social network formation does facilitate adjustment, and insight into the effect of adjustment type and demographic variables on network functions was obtained. Furthermore, the actual conditions regarding network formation of international students in Japan were revealed.     

Effects of prior knowledge and response bias upon recognition memory for a story: Implications for children's eyewitness testimony

Abstract: The present study was designed to evaluate the integration hypothesis and the response bias hypothesis for explaining the fragility of children's eyewitness memory, by varying the plausibility of postevent information and the strength of response bias in recognition tests. Preschool children were told a story in which a boy named Ken saw a housebreaker stealing various objects and the postevent information was also incorporated into the story. The first recognition test was administered immediately following the presentation of an interpolated story, and the second recognition test was administered 10 weeks later. The results indicated that high-plausibility objects tended to be recognized as the stolen objects in the second recognition test, and that recognition accuracy was higher for a new-distractor condition than for a misleading-distractor condition. These findings were interpreted as suggesting that the memory representation of the story might be changed through the integration processes and/or rendered inaccessible in terms of the response bias.     

Perception of emergent configurations in humans (Homo sapiens) and chimpanzees (Pan troglodytes)

We examined the perceptions of emergent configurations in humans and chimpanzees using a target-localization task. The stimulus display consisted of a target placed among multiple identical distractors. The target and distractors were presented either solely, within congruent contexts in which salient configurations emerge, or within incongruent contexts in which salient configurations do not emerge. We found that congruent contexts had similar facilitative effects on target localization by humans and chimpanzees, whereas similar disruptive effects emerged when the stimuli were presented within incongruent contexts. When display size was manipulated, targets under the congruent-context condition were localized in a parallel manner, but those under the no-context and incongruent-context conditions were localized in a serial manner by both species. These results suggest that both humans and chimpanzees perceive emergent configurations when targets and distractors are presented within certain congruent contexts and that they process such emergent configurations preattentively.     

Psychopathy and looming cognitive style: Moderation by attentional control

Psychopathy has long been associated with lower anxiety. This study examined the relationship between self-reported psychopathy and one of the anxiety-related cognitions, looming cognitive style (LCS; Riskind, Williams, Gessner, Chrosniak, & Cortina, 2000), among students. LCS reflects the tendency to perceive danger as rapidly increasing, as opposed to making a static risk assessment. This study focused on LCS not only because it has a strong association with anxiety, but also because studies employing the Card Playing Task have shown that psychopathy predicts difficulty in detecting changing contingencies. Attentional control was included as a possible moderator of a psychopathy-LCS link. Two questionnaire studies (n = 157 and 312) revealed an inverse relation between psychopathy and LCS in low-attention participants. This suggests that reduced cognitive resources inhibited those with psychopathic tendencies from imagining rapidly developing threats. The results are discussed in terms of the resource requirements of risk cognitions, the multi-dimensional nature of attention, and a defective behavioral inhibition system in (secondary) psychopathy. This study suggests the importance of considering attention when analyzing the psychopathy-anxiety link. Future studies should use multi-dimensional analysis of attentional control and multiple measures of psychopathy.     

Perception of depth from shading in infant chimpanzees (<Emphasis Type="Italic">Pan troglodytes</Emphasis>)

We investigated the ability to perceive depth from shading, one of the pictorial depth cues, in three chimpanzee infants aged 4–10 months old, using a preferential reaching task commonly used to study pictorial depth perception in human infants. The chimpanzee infants reached significantly more to three-dimensional toys than to pictures thereof and more to the three-dimensional convex than to the concave. Furthermore, two of the three infants reached significantly more to the photographic convex than to the photographic concave. These infants also looked longer at the photographic convex than the concave. Our results suggest that chimpanzees perceive, at least as early as the latter half of the first year of life, pictorial depth defined by shading information. Photographic convexes contain richer information about pictorial depth (e.g., attached shadow, cast shadow, highlighted area, and global difference in brightness) than simple computer-graphic graded patterns. These cues together might facilitate the infants perception of depth from shading.     

Marginal maximum likelihood estimation of item response theory (IRT) equating coefficients for the common-examinee design

A method of estimating item response theory (IRT) equating coefficients by the common-examinee design with the assumption of the two-parameter logistic model is provided. The method uses the marginal maximum likelihood estimation, in which individual ability parameters in a common-examinee group are numerically integrated out. The abilities of the common examinees are assumed to follow a normal distribution but with an unknown mean and standard deviation on one of the two tests to be equated. The distribution parameters are jointly estimated with the equating coefficients. Further, the asymptotic standard errors of the estimates of the equating coefficients and the parameters for the ability distribution are given. Numerical examples are provided to show the accuracy of the method.     

Development of the Brief Personal Values Inventory for Sense of Values

The Portrait Values Questionnaire (PVQ) is a widely used questionnaire for assessing sense of values; however, it is difficult to apply for children and adolescents. Therefore, the present study aimed to develop a questionnaire for sense of values, called the Brief Personal Values Inventory (BPVI), consisting of simple questions and fewer items compared to the PVQ. We first created 12 items for the BPVI and then tested criterion-related validity with values in the PVQ-57 in 167 Japanese general population participants (81 males, mean age [SD], range: 23.4 [8.2], 15–57 years). Each of these items was correlated with one or more of the values in the PVQ-57 and covered all higher-order values in Schwartz's theory (openness to change, self-enhancement, conservation, and self-transcendence). In summary, the BPVI adequately corresponded with Schwartz's value theory, indicating an acceptable criterion-related validity. This questionnaire is applicable to a wide population, including adolescents, and will be a useful tool for researchers to elucidate the developmental pathway of personal sense of values.